Servo Tester Using Picaxe 08M
This is my second Picaxe project . It is a simple servo tester or servo cycler built using an 08M . It has 3 modes of operation . In mode 1 each servo is controlled by its own pot . In mode 2 both servos are centered with a 1.5 millisecond pulse . In mode 3 both servos are cycled with the left pot setting the low end point and the right pot setting the high end point . The modes are cycled using a normally open switch . I had to use the pulseout command instead of the servo and servopos commands to avoid jitter .
I used an enclosure from an old rc toy airplane charger for the case . It was a tight fit for the 4 AA battery box , 2 pots , circuit board etc. The circuit board was made by laser printing onto a label backing sheet and transferring by iron to the pcb . Ferric chloride was used for etching . This was the first time I tried the laser printer method and the results were ok but not great .
I know you can buy a single channel version of this for a few dollars but I like to make my own stuff . It's really handy for setting up servos without doing any programming . I have included the basic program and schematic for anyone who is interested .